In which of the following is the renal portal system found?

For the reaction $3X_{(g)} + Y_{(g)} \rightleftharpoons X_3Y_{(g)}$,the amount of $X_3Y$ at equilibrium is affected by ...........

If $y=A \cos n x+B \sin n x$,then $y_2+n^2 y$ is equal to

Which of the following pairs of organs consists only of endocrine glands?

Starting from rest,the time taken by a body sliding down on a rough inclined plane at $45^{\circ}$ with the horizontal is twice the time taken to travel on a smooth plane of the same inclination and same distance. Then the coefficient of kinetic friction is:

What is meant by $Tin \ Cry$?